如何把波峰波谷在图上标记出来？求改错

zhounan

Vars
NumericSeries SwingHighPrice;
NumericSeries SwingLowPrice;
Numeric n;
Numeric m;
Begin
SwingHighPrice = SwingHigh( 1, High, 2,20);
n=SwingHighBar(1,High,2,20);
PlotNumeric ("SwingHighPrice",Low,high,n);
SwingLowPrice = SwingLow( 1, Low, 2, 20 );
m=SwingLowBar(1,Low,2,20);
PlotNumeric ("SwingLowPrice",High,Low,m);

End
我想标记波峰波谷，不知道哪里出错了，请求解答，能不能给一个正确的指令